774561087 has 48 divisors (see below), whose sum is σ = 1271462400. Its totient is φ = 451725120.

The previous prime is 774561077. The next prime is 774561091. The reversal of 774561087 is 780165477.

774561087 is a `hidden beast` number, since 7 + 7 + 4 + 561 + 0 + 87 = 666.

It is not a de Polignac number, because 774561087 - 2⁶ = 774561023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (774561077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 110662 + ... + 117452.

It is an arithmetic number, because the mean of its divisors is an integer number (26488800).

Almost surely, 2^774561087 is an apocalyptic number.

774561087 is a deficient number, since it is larger than the sum of its proper divisors (496901313).

774561087 is a wasteful number, since it uses less digits than its factorization.

774561087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6868 (or 6865 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

The square root of 774561087 is about 27830.9375875122. The cubic root of 774561087 is about 918.3718394824.

The spelling of 774561087 in words is "seven hundred seventy-four million, five hundred sixty-one thousand, eighty-seven".